RonFax Blog
How to Send a Fax from Outlook Email (2026 Step-by-Step)
Published · www.ronfax.com
Send a fax from Outlook or Outlook.com: RonFax email-to-fax with PDF attachment, or browser upload. No fax modem—works with Microsoft 365 and desktop Outlook.
How to send a fax from Outlook email is a common workplace search—especially when HR, insurance, or legal still list a fax number but your office has no fax machine.
Outlook cannot dial fax lines natively. RonFax connects your Outlook attachment to the phone fax network.
Method 1 — Email-to-fax from Outlook
- New message in Outlook or Outlook.com
- To:
fax@ronfax.com - Subject: 10-digit US fax number (example:
8005551234) - Attach your PDF (export Word docs to PDF first)
- Send
- Open RonFax’s auto-reply payment link and complete checkout
- We fax your attachment and email status updates
Same flow as Gmail—see also send fax from Gmail.
Method 2 — Browser upload (large files)
- Save attachment from Outlook to your PC
- Open ronfax.com/#send
- Enter destination fax number
- Upload PDF → pay → track status
Better for multi-megabyte packets or when corporate Outlook blocks external auto-replies.
Outlook at work (IT policies)
Some tenants block auto-replies from unknown domains. If fax@ronfax.com is filtered:
- Use ronfax.com upload on the same machine, or
- Forward the PDF to a personal mailbox allowed to reach RonFax
Outlook fax vs store fax
| Retail fax counter | RonFax + Outlook | |
|---|---|---|
| Leave desk | Yes | No |
| Audit trail | Paper receipt | Email + status URL |
| Pricing | Per page at store | Shown before pay |
Compose in Outlook; RonFax handles the fax dial.
Frequently asked questions
- Can Outlook send a fax by itself?
- Outlook sends email, not faxes. RonFax email-to-fax accepts your Outlook message with a PDF attached and transmits to the fax number you specify in the Subject line.
- Does this work with Outlook.com and desktop Outlook?
- Yes. Compose in Outlook on the web, Windows, or Mac—or use ronfax.com in your browser to upload the same PDF.
- What file types can I fax from Outlook?
- PDF is best. Save Word attachments as PDF before sending. RonFax also accepts JPG/PNG via email-to-fax or browser upload.
Send from anywhere in the US
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